/// Defines the HTTP configuration for an API service. It contains a list of
/// [HttpRule][google.api.HttpRule], each specifying the mapping of an RPC method
/// to one or more HTTP REST API methods.
#[derive(Clone, PartialEq, ::prost::Message)]
pub struct Http {
    /// A list of HTTP configuration rules that apply to individual API methods.
    ///
    /// **NOTE:** All service configuration rules follow "last one wins" order.
    #[prost(message, repeated, tag = "1")]
    pub rules: ::prost::alloc::vec::Vec<HttpRule>,
    /// When set to true, URL path parmeters will be fully URI-decoded except in
    /// cases of single segment matches in reserved expansion, where "%2F" will be
    /// left encoded.
    ///
    /// The default behavior is to not decode RFC 6570 reserved characters in multi
    /// segment matches.
    #[prost(bool, tag = "2")]
    pub fully_decode_reserved_expansion: bool,
}
/// `HttpRule` defines the mapping of an RPC method to one or more HTTP
/// REST API methods. The mapping specifies how different portions of the RPC
/// request message are mapped to URL path, URL query parameters, and
/// HTTP request body. The mapping is typically specified as an
/// `google.api.http` annotation on the RPC method,
/// see "google/api/annotations.proto" for details.
///
/// The mapping consists of a field specifying the path template and
/// method kind.  The path template can refer to fields in the request
/// message, as in the example below which describes a REST GET
/// operation on a resource collection of messages:
///
///
///     service Messaging {
///       rpc GetMessage(GetMessageRequest) returns (Message) {
///         option (google.api.http).get = "/v1/messages/{message_id}/{sub.subfield}";
///       }
///     }
///     message GetMessageRequest {
///       message SubMessage {
///         string subfield = 1;
///       }
///       string message_id = 1; // mapped to the URL
///       SubMessage sub = 2;    // `sub.subfield` is url-mapped
///     }
///     message Message {
///       string text = 1; // content of the resource
///     }
///
/// The same http annotation can alternatively be expressed inside the
/// `GRPC API Configuration` YAML file.
///
///     http:
///       rules:
///         - selector: <proto_package_name>.Messaging.GetMessage
///           get: /v1/messages/{message_id}/{sub.subfield}
///
/// This definition enables an automatic, bidrectional mapping of HTTP
/// JSON to RPC. Example:
///
/// HTTP | RPC
/// -----|-----
/// `GET /v1/messages/123456/foo`  | `GetMessage(message_id: "123456" sub: SubMessage(subfield: "foo"))`
///
/// In general, not only fields but also field paths can be referenced
/// from a path pattern. Fields mapped to the path pattern cannot be
/// repeated and must have a primitive (non-message) type.
///
/// Any fields in the request message which are not bound by the path
/// pattern automatically become (optional) HTTP query
/// parameters. Assume the following definition of the request message:
///
///
///     service Messaging {
///       rpc GetMessage(GetMessageRequest) returns (Message) {
///         option (google.api.http).get = "/v1/messages/{message_id}";
///       }
///     }
///     message GetMessageRequest {
///       message SubMessage {
///         string subfield = 1;
///       }
///       string message_id = 1; // mapped to the URL
///       int64 revision = 2;    // becomes a parameter
///       SubMessage sub = 3;    // `sub.subfield` becomes a parameter
///     }
///
///
/// This enables a HTTP JSON to RPC mapping as below:
///
/// HTTP | RPC
/// -----|-----
/// `GET /v1/messages/123456?revision=2&sub.subfield=foo` | `GetMessage(message_id: "123456" revision: 2 sub: SubMessage(subfield: "foo"))`
///
/// Note that fields which are mapped to HTTP parameters must have a
/// primitive type or a repeated primitive type. Message types are not
/// allowed. In the case of a repeated type, the parameter can be
/// repeated in the URL, as in `...?param=A&param=B`.
///
/// For HTTP method kinds which allow a request body, the `body` field
/// specifies the mapping. Consider a REST update method on the
/// message resource collection:
///
///
///     service Messaging {
///       rpc UpdateMessage(UpdateMessageRequest) returns (Message) {
///         option (google.api.http) = {
///           put: "/v1/messages/{message_id}"
///           body: "message"
///         };
///       }
///     }
///     message UpdateMessageRequest {
///       string message_id = 1; // mapped to the URL
///       Message message = 2;   // mapped to the body
///     }
///
///
/// The following HTTP JSON to RPC mapping is enabled, where the
/// representation of the JSON in the request body is determined by
/// protos JSON encoding:
///
/// HTTP | RPC
/// -----|-----
/// `PUT /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id: "123456" message { text: "Hi!" })`
///
/// The special name `*` can be used in the body mapping to define that
/// every field not bound by the path template should be mapped to the
/// request body.  This enables the following alternative definition of
/// the update method:
///
///     service Messaging {
///       rpc UpdateMessage(Message) returns (Message) {
///         option (google.api.http) = {
///           put: "/v1/messages/{message_id}"
///           body: "*"
///         };
///       }
///     }
///     message Message {
///       string message_id = 1;
///       string text = 2;
///     }
///
///
/// The following HTTP JSON to RPC mapping is enabled:
///
/// HTTP | RPC
/// -----|-----
/// `PUT /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id: "123456" text: "Hi!")`
///
/// Note that when using `*` in the body mapping, it is not possible to
/// have HTTP parameters, as all fields not bound by the path end in
/// the body. This makes this option more rarely used in practice of
/// defining REST APIs. The common usage of `*` is in custom methods
/// which don't use the URL at all for transferring data.
///
/// It is possible to define multiple HTTP methods for one RPC by using
/// the `additional_bindings` option. Example:
///
///     service Messaging {
///       rpc GetMessage(GetMessageRequest) returns (Message) {
///         option (google.api.http) = {
///           get: "/v1/messages/{message_id}"
///           additional_bindings {
///             get: "/v1/users/{user_id}/messages/{message_id}"
///           }
///         };
///       }
///     }
///     message GetMessageRequest {
///       string message_id = 1;
///       string user_id = 2;
///     }
///
///
/// This enables the following two alternative HTTP JSON to RPC
/// mappings:
///
/// HTTP | RPC
/// -----|-----
/// `GET /v1/messages/123456` | `GetMessage(message_id: "123456")`
/// `GET /v1/users/me/messages/123456` | `GetMessage(user_id: "me" message_id: "123456")`
///
/// # Rules for HTTP mapping
///
/// The rules for mapping HTTP path, query parameters, and body fields
/// to the request message are as follows:
///
/// 1. The `body` field specifies either `*` or a field path, or is
///    omitted. If omitted, it indicates there is no HTTP request body.
/// 2. Leaf fields (recursive expansion of nested messages in the
///    request) can be classified into three types:
///     (a) Matched in the URL template.
///     (b) Covered by body (if body is `*`, everything except (a) fields;
///         else everything under the body field)
///     (c) All other fields.
/// 3. URL query parameters found in the HTTP request are mapped to (c) fields.
/// 4. Any body sent with an HTTP request can contain only (b) fields.
///
/// The syntax of the path template is as follows:
///
///     Template = "/" Segments [ Verb ] ;
///     Segments = Segment { "/" Segment } ;
///     Segment  = "*" | "**" | LITERAL | Variable ;
///     Variable = "{" FieldPath [ "=" Segments ] "}" ;
///     FieldPath = IDENT { "." IDENT } ;
///     Verb     = ":" LITERAL ;
///
/// The syntax `*` matches a single path segment. The syntax `**` matches zero
/// or more path segments, which must be the last part of the path except the
/// `Verb`. The syntax `LITERAL` matches literal text in the path.
///
/// The syntax `Variable` matches part of the URL path as specified by its
/// template. A variable template must not contain other variables. If a variable
/// matches a single path segment, its template may be omitted, e.g. `{var}`
/// is equivalent to `{var=*}`.
///
/// If a variable contains exactly one path segment, such as `"{var}"` or
/// `"{var=*}"`, when such a variable is expanded into a URL path, all characters
/// except `[-_.~0-9a-zA-Z]` are percent-encoded. Such variables show up in the
/// Discovery Document as `{var}`.
///
/// If a variable contains one or more path segments, such as `"{var=foo/*}"`
/// or `"{var=**}"`, when such a variable is expanded into a URL path, all
/// characters except `[-_.~/0-9a-zA-Z]` are percent-encoded. Such variables
/// show up in the Discovery Document as `{+var}`.
///
/// NOTE: While the single segment variable matches the semantics of
/// [RFC 6570](https://tools.ietf.org/html/rfc6570) Section 3.2.2
/// Simple String Expansion, the multi segment variable **does not** match
/// RFC 6570 Reserved Expansion. The reason is that the Reserved Expansion
/// does not expand special characters like `?` and `#`, which would lead
/// to invalid URLs.
///
/// NOTE: the field paths in variables and in the `body` must not refer to
/// repeated fields or map fields.
#[derive(Clone, PartialEq, ::prost::Message)]
pub struct HttpRule {
    /// Selects methods to which this rule applies.
    ///
    /// Refer to [selector][google.api.DocumentationRule.selector] for syntax details.
    #[prost(string, tag = "1")]
    pub selector: ::prost::alloc::string::String,
    /// The name of the request field whose value is mapped to the HTTP body, or
    /// `*` for mapping all fields not captured by the path pattern to the HTTP
    /// body. NOTE: the referred field must not be a repeated field and must be
    /// present at the top-level of request message type.
    #[prost(string, tag = "7")]
    pub body: ::prost::alloc::string::String,
    /// Optional. The name of the response field whose value is mapped to the HTTP
    /// body of response. Other response fields are ignored. When
    /// not set, the response message will be used as HTTP body of response.
    #[prost(string, tag = "12")]
    pub response_body: ::prost::alloc::string::String,
    /// Additional HTTP bindings for the selector. Nested bindings must
    /// not contain an `additional_bindings` field themselves (that is,
    /// the nesting may only be one level deep).
    #[prost(message, repeated, tag = "11")]
    pub additional_bindings: ::prost::alloc::vec::Vec<HttpRule>,
    /// Determines the URL pattern is matched by this rules. This pattern can be
    /// used with any of the {get|put|post|delete|patch} methods. A custom method
    /// can be defined using the 'custom' field.
    #[prost(oneof = "http_rule::Pattern", tags = "2, 3, 4, 5, 6, 8")]
    pub pattern: ::core::option::Option<http_rule::Pattern>,
}
/// Nested message and enum types in `HttpRule`.
pub mod http_rule {
    /// Determines the URL pattern is matched by this rules. This pattern can be
    /// used with any of the {get|put|post|delete|patch} methods. A custom method
    /// can be defined using the 'custom' field.
    #[derive(Clone, PartialEq, ::prost::Oneof)]
    pub enum Pattern {
        /// Used for listing and getting information about resources.
        #[prost(string, tag = "2")]
        Get(::prost::alloc::string::String),
        /// Used for updating a resource.
        #[prost(string, tag = "3")]
        Put(::prost::alloc::string::String),
        /// Used for creating a resource.
        #[prost(string, tag = "4")]
        Post(::prost::alloc::string::String),
        /// Used for deleting a resource.
        #[prost(string, tag = "5")]
        Delete(::prost::alloc::string::String),
        /// Used for updating a resource.
        #[prost(string, tag = "6")]
        Patch(::prost::alloc::string::String),
        /// The custom pattern is used for specifying an HTTP method that is not
        /// included in the `pattern` field, such as HEAD, or "*" to leave the
        /// HTTP method unspecified for this rule. The wild-card rule is useful
        /// for services that provide content to Web (HTML) clients.
        #[prost(message, tag = "8")]
        Custom(super::CustomHttpPattern),
    }
}
/// A custom pattern is used for defining custom HTTP verb.
#[derive(Clone, PartialEq, ::prost::Message)]
pub struct CustomHttpPattern {
    /// The name of this custom HTTP verb.
    #[prost(string, tag = "1")]
    pub kind: ::prost::alloc::string::String,
    /// The path matched by this custom verb.
    #[prost(string, tag = "2")]
    pub path: ::prost::alloc::string::String,
}
